iPads don't seem to show the Navigation Menu when accessing wikispaces. This is the menu which is usually on the left hand side of the pages.
To see the menu iPad users should click on the 3 dots ••• which are at the bottom right hand of your screen.
See the screenshot below:

iPad screen.jpg
iPad screen.jpg

The Navigation Menu will open in its own page - click on the link of the page you wish to view.
Click the 3 Dots to return to the Navigation Menu.